Circuit-controller for trolley-signals.



A. BEVAN. CIRCUIT GONTROLLER FOR TROLLEY SIGNALS.

.APPLIOATION FILED MAR. 23, 1908.

Patented Feb. 9, 1909.

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ingson the base of the controller. Pivoted" to the arms 7 andS are the linl'ibars 31 and 32, provided with slots 33 and 34:, through which the pins 35 and 36 pass to the circuit closers 15 and 16.

A spring 39 presses against the shoulder of the actuatmg leverto maintain always a good electrical contact between said lever These signals 40 and 41 should be suitably located for observation by the motorman, and may be included in the circuitot' the main signal 42 or in a branch circuit The operation of the device may. be described as follows: When the actuating lever 3 is thrown to the left, as indicated in dotted lines, the movable parts at the right or" the controller are moved to the positions shown in Fig. 1. This movement throws lug 10 into the path of movement of lug 9,

so that arm -7 cannot beoperated unti-lafter the return of arm 8 to normal, and hence arm 7 will arrest the return motion of the actuating lever 3 when it reaches the vertical or normal position. It will be further noted that the movement of circuit closer 16 to the right has thrown its restoring spring .24 into a position in which its action is on the dead center line with the pivoting point of said closer, and hence it can exert no restoring action on the said closer while in this position. The-springs l1 and 12, however, act at once to start the return of the arm 8 and its pivotally attached bar 32. When this movement has proceeded far enough to cause the farther end of slot 34 to bear upon pin 36 the circuit closer 16 will be started on its return, whereupon the restoring'spring 24 will be raised above the dead center linegallowing itsaction to be sufficiently eliective to complete the return movement of said circuit closer to normal. It should be explained that the springs 11 and 12.are of such length and -tens1on as is necessary to take up the lost motion due to the slot 34 and start the circuit closer 16 sutficieutly to carry the restoring spring 24 out of the line of dead center action into a position of effective actiomand thus allow the same to complete thereturn movement of all the parts to normal, but springs 11 and 12 cease to act .as soon as spring 24: begins to act efi'ectively.

The same ends may be gained without the use-of the springs 11 and 12 by placing a block e'sl, as shown in Fig. 4, under the restoring springs, so that when the circuit closers are thrown over to make contact said springs 23 and 24 will be bent downward as well as compressed, and hence will exert a restoring action on the circuit closers even when in their extreme outward positions. The lugs or extending portions 9 and 10 are shown in Fig. l as being formed integral with the arms 7 and 8, but they might also be made separate from said arms and pivoted on the samepivot pins 5 and 6, and then operated by means'of stiff springs 47 and +8, or other adequately yielding connection, said lugs being adapted to rest normally against stops 49 and 50, so that in case one of the arms should fail for any reason to be returned to normal, the other arm could be operated by a car going in the opposite direction without breaking the mechanism;

My invention is not restricted to the precise construction and arrangement of parts herein shown and described, as the same may be modified or rearranged in various particulars without departing from the spiritand scope of. my invention, one practical embodiment of which has been herein illustrated and described without attempting to show all-ofthe various forms and modifications in which my invention might be embodied.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: i

1. A circuit controller including a pair of circuit closers, an actuating lever for said closers, and means whereby the actuation of either closer operates means to lock the other.

2. A circuit controller including a pair of circuit closers, an actuating lever for said closers, and means whereby neither closer can be effectively actuated" by said lever during the operation of the other closer.

3. In a circuit controller, the combination of a pair of circuit closers, an actuating lever pivotally hung between said closers, and means whereby when one closer is moved by said lever to its operative position the other of said closers is locked against movement until the return of said first closer to normal.

4. A circuit controller including a pair of circuit closers, an actuating lever for said closers, means whereby the actuation of either closer by said lever operates means to prevent the actuation of the other closer by said lever, and means for prolonging the contact of each closer.

5. In a circuit controller, the combination of a pair of circuit closers. an actuating lever pivotally hung between said closers, means whereby when one closer is moved by said lever to its operative position the other of'said closers is locked against movement eration of one arm moves sto p inio said iever prevents an actuation fihe other arm by said lever until afier the return of the first arm.

80 A circuit controller including a pair or arms, an actuating lever pivotaliy hung hetiveen said arms and means whereby the or;

path of movement of the other arm to vent the latter arm from losing operated until the former-has returned to normal.

9. In a circuit controller, a pair of arms, an actuating lever therefor, a circuit closer operatively connected to each arm, and means whereby either arm may make a por' tion of its return stroke before starting the return of its circuit closer.

10. A circuit controller including a. of circuit closers, an actuating lever for 1110i" ing each of said closers into operative position, auxiliary means for effecting the initial return movement of said closer, and means for: completing said return stroke after having been started by said auxiliary means.

11. in a circuit controller, an aciu'aiing lever, a pivoted circuit closer, a restoring spring acting only to return said closer .to

is made i1" .vifective until after the said closer has been started on its return movementfrom operative position.

12. In a circuitcontroller, a pair of locking arms, an actuating lever there or, a pair of circuit, closers, means rz hereo said closers may be operated. to close their spective circuits, and means whereby the re turn of said closers may he delayed. to p o iong the coniac 13. in a circuit conrroiier, an acx lever, a pair of arms, a pair of ci a: closers,'a resroring spring for cioser, means whereby said closers ma operaied to rheir respective circa a and means whereby the restoring aciion or said springs -will be least effective when circuit ciosers are at their limit of opera'tive movement,

ii. In a circuit controller, the combination of an actuating lever, a circuit closer, means whereby said closer may be oper lied only to close a circuit, restoring means aciing only to return said closer to oper circuit position, and means whereby the Feetive force of said restoring means will increase with the return of said closer to nor mal'posiiiona In tesiimony whereof I aiiizr my signature in presence of two witnesses.

ALEXANDER BEVAN.

Witnesses:

Howauo E. Barrow, 12, 1. Genes. 

